qemu: A DMA reentrancy issue was found in the Tulip device emulation in QEMU
CVE-2022-2962 is fixed in qemu on 1 platform, first by DEBIAN-CVE-2022-2962, released September 13, 2022. It is not reported as exploited. Patch Radar priority: High.
A DMA reentrancy issue was found in the Tulip device emulation in QEMU. When Tulip reads or writes to the rx/tx descriptor or copies the rx/tx frame, it doesn't check whether the destination address is its own MMIO address. This can cause the device to trigger MMIO handlers multiple times, possibly leading to a stack or heap overflow. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| qemu · Debian 12.15 (bookworm) | 1:7.1+dfsg-2 | DEBIAN-CVE-2022-2962 | Sep 13, 2022 |
| qemu · Debian 13.5 (trixie) | 1:7.1+dfsg-2 | DEBIAN-CVE-2022-2962 | Sep 13, 2022 |
| qemu · Debian 14 | 1:7.1+dfsg-2 | DEBIAN-CVE-2022-2962 | Sep 13, 2022 |
Patch Radar data is free to use with attribution. Terms and how to credit it.
Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.